Near rhymes:
* late
* wait
* great
* hate
* fate
* straight
Eye rhymes:
* eight
* weight
If you're looking for rhymes in French, here are some options:
* fait (done)
* trait (trait, characteristic)
* laitue (lettuce)
* laitron (a type of plant)
* pait (past participle of "payer," to pay)
Ultimately, the best rhyme for "lait" depends on the context and what you're trying to achieve.